The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2013
Filed:
May. 06, 2008
Sung-ik Park, Daejon, KR;
Heung-mook Kim, Daejon, KR;
So-ra Park, Daejon, KR;
Yong-tae Lee, Daejon, KR;
Jong-soo Lim, Daejon, KR;
Soo-in Lee, Daejon, KR;
Sung-Ik Park, Daejon, KR;
Heung-Mook Kim, Daejon, KR;
So-Ra Park, Daejon, KR;
Yong-Tae Lee, Daejon, KR;
Jong-Soo Lim, Daejon, KR;
Soo-In Lee, Daejon, KR;
Abstract
Provided is an apparatus and method for estimating inverse channel of a repeater's receiving channel, which ensures stability and causality by generating a time-domain filter coefficient having information on an inverse channel of repeater's receiving channel from a signal transmitted from a main transmitter or another repeater. The apparatus includes: a channel estimator for estimating a channel established by a transmission path from a received signal; an inverse minimum phase filter coefficient generator for generating inverse channel of a minimum phase channel from the estimated channel, and converting the inverse channel of the minimum phase channel into a time-domain filter coefficient; an inverse group delay filter coefficient generator for generating a time-domain filter coefficient by using the estimated channel and the minimum phase channel; and a combiner for generating an inverse channel of a receiving channel in a time domain by combining the filter coefficient and the filter coefficient.